Home / 129,433.26-178,588.35-72,823.98

Finding the Fourth Proportional to 129,433.26, 178,588.35 and 72,823.98

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Solution

The fourth proportional to 129,433.26, 178,588.35 and 72,823.98 is: 100,480.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,433.26 : 178,588.35 = 72,823.98 : x
  2. Step 2: Convert to fraction form
    129,433.26/178,588.35 = 72,823.98/x
  3. Step 3: Cross multiply
    129,433.26x = 178,588.35 × 72,823.98
  4. Step 4: Simplify right side
    129,433.26x = 13,005,514,428.63
  5. Step 5: Solve for x
    x = 13,005,514,428.63/129,433.26
  6. Step 6: Final answer
    x = 100,480.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.